The NIHR Central Commissioning Facility (CCF) has recently published their involvement and engagement plan for 2018/19:

The National Institute for Health Research (NIHR) works to improve the health and wealth of the nation through research and is committed to involving patients and the public at every step. In 2017, five national priorities for involvement and engagement in research were identified as the focus for NIHR-wide delivery over the next 12 to 18 months. The plan reflects those national priorities which you can read about here.